We sent both messages simultaneously..

Is there any significant difference between the two versions ?

Mine: HeySel HoS bIQ'a' qoD Duj
Yours: bIQ'a' qoD HeySel HoS Duj

I always find your noun-nouns to be ordered strangely. I wonder if it's something to do with the way Greek differs from English.

Mine is a ship. An ocean's interior ship. An ocean's interior ship of atomic power.

Yours is a ship. A atomic power ship. An atomic power ship of the ocean's interior.

Mine suggests that, of the various sorts of submarine there may be, we're talking about the nuclear-powered kind.

Yours suggests that, of the various sorts of nuclear-powered ships there may be, we're talking about the underwater kind.

-- 
SuStel
http://trimboli.name